Why do triangle angles always sum to 180°?
In this lesson you will learn about the interior angles of triangles by looking at their properties.
Let’s Review The three angles of a triangle always sum to 180° = = = = 180
A line that passes through parallel lines is called a transversal.
Transversals create special angle properties. Alternate Exterior AnglesCorresponding Angles Alternate Interior Angles
Core Lesson Triangles share many of these angle relationships
Find the missing angle measurement. x = = 23 x = 23°
In this lesson you have learned about the interior angles of triangles by looking at their properties.